πππ = (πΈ / 100) β ((2 β π·π ^ 2) β π·π ^ 2) β πΏπ / 6176.4
ππ = πππβ’ S
E = Volumetric Efficiency (percent)
Dl = Pump Liner Diameter (inch)
DR = Rod Diameter (inch)
Ls = Pump Stroke Length (inch)
S = Number of Stroke Per Minute
πππ‘ = (πΈ / 100) β ((2 β π·π ^ 2) ) β πΏπ / 4177.6
ππ = πππ β’ S


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